... because today there are two of you. There's the analog, warm-blooded version ... Then there's the online you, your digital doppelganger; that's the one that is growing larger and more impossible to control every day.
Googling people is also becoming a way for bosses and headhunters to do continuous and stealthy background checks on employees, no disclosure required.
This is a good reminder to be careful what you say on the Net and how you say it. I am not advocating self-censorship, but it's worth looking down the road before you post. Are you sure you won't regret your words five years from now?